S-4548K155 0.493" ID x 43/64" OD x 3" Long ASTM A733, ASME B1.20.1 Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in harsh chemical and marine environments, thanks to 316/316L stainless steel construction.
• Reliable, leak-resistant connections with NPT threads on both ends, ensuring a secure seal for high-pressure fluid and gas systems.
• Enhanced structural integrity from seamless construction, minimizing weak points and preventing failures under stress in industrial applications.
• Broad media compatibility for safe use with air, natural gas, oil, steam, and water, providing versatile application across multiple industries.
• Guaranteed dimensional accuracy and thread conformity, meeting ASTM A733 and ASME B1.20.1 standards for consistent, interchangeable fittings.
• Long-term environmental safety with RoHS 3 compliance, ensuring the fitting is free from hazardous substances for regulated installations.
• Optimized flow characteristics with Schedule 40 wall thickness, balancing pressure handling and internal diameter for efficient system performance.

Professional Applications & Engineering Value

This 3/8" Schedule 40 NPT threaded pipe nipple is engineered to address critical challenges in industrial fluid and gas handling systems. Constructed from seamless 316/316L stainless steel, it eliminates weld seams that can become failure points under cyclic pressure or corrosive attack, making it ideal for demanding applications in chemical processing, oil and gas pipelines, and power generation. The NPT thread type ensures a tight, pressure-rated seal that resists vibration loosening, while the material's high chromium and molybdenum content provides exceptional pitting and crevice corrosion resistance when exposed to chlorides, acids, or high-temperature steam. This combination of seamless construction and premium alloy delivers reliable performance in systems conveying air, natural gas, oil, steam, and water, reducing maintenance downtime and replacement costs in harsh operational environments.

Specification Summary & Compliance

This pipe nipple conforms to ASTM A733 for standard welded and seamless carbon and austenitic stainless steel pipe nipples and ASME B1.20.1 for NPT thread dimensions and gauging practices, ensuring precise Class 2A thread fit and dimensional interchangeability. It is manufactured as a seamless component with a 3-inch length, 3/8" nominal pipe size, and Schedule 40 wall thickness (0.091"). The product is RoHS 3 (2015/863/EU) Compliant, adhering to restrictions on hazardous substances for environmental and workplace safety.